Shear Strength 4


Shear Strength 4 : In a snow slab, the slope parallel component of gravity tends to pull the slab downhill while friction and cohesion between snow surfaces act to hold the slab in place. Slippage between the slab and its undersurface can result, and avalanching can result if gravity induced shear stress between layers exceeds shear strength bonding layers together. Snow layers composed of surface hoar, graupel, low-density snow, etc., have very low shear strengths
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